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Calciothorite

A variety of Thorite
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Formula:
(Th,Ca2)SiO4 · 3.5H2O
A Ca-bearing thorite that was first described by Brögger (1887) from the islands of Låven and Arøy in the Langesundsfjord, Vestfold, Norway.

Compare ekanite.


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Unique IdentifiersHide

Mindat ID:
835 (as Calciothorite)
3946 (as Thorite)
Long-form identifier:
mindat:1:1:835:4 (as Calciothorite)
mindat:1:1:3946:4 (as Thorite)

Pronunciation of CalciothoriteHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Chemistry of CalciothoriteHide

Mindat Formula:
(Th,Ca2)SiO4 · 3.5H2O
Element Weights:
Element% weight
Th59.931 %
O30.993 %
Si7.254 %
H1.822 %

Calculated from ideal end-member formula.
Elements listed:
Ca, H, O, Si, Th - search for minerals with similar chemistry

Other Language Names for CalciothoriteHide

RadioactivityHide

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for CalciothoriteHide

References for CalciothoriteHide

Reference List:

Localities for CalciothoriteHide

Showing 7 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Australia
 
  • Northern Territory
    • Central Desert Region
      • Nolans Bore
Anenburg et al. (2018)
Norway
 
  • Nordland
    • Hamarøy
      • Drag
        • Eivollen
Zhou et al. (2026)
Zhou et al. (2026)
  • Vestfold
    • Larvik Commune
Brøgger (1890) +1 other reference
Brøgger (1890) +1 other reference
Romania
 
  • Bihor County
www.researchgate.net (n.d.)
USA
 
  • Connecticut
    • Fairfield County
      • Danbury
Januzzi et al. (1976)
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